The weather observed at BOSTON, MA (KBOS) at 10:54 AM EST was: The skies were clear. Temperature: 54F ( 12C) Dewpoint: 39F ( 4C) Relative Humidity: 58% Winds from the W (280 degs) at 10 mph. Pressure: 1016.5 millibars. Altimeter:30.02 inches of mercury. The prevailing visibility was 10 miles.